ERZ Performance High Flow Cats, Install and Review Thread

[kielbasa16]

Originally Posted by chops

anyone have issues with constant CEL's?

i got my first CEL a month ago - catalytic converter efficiency bank 2. ive since cleared it, stuffed in varying amounts of stainless steel wool, and no fix. if im driving in the city, it seems to hold up, but freeway driving causes the CEL to come back almost guarenteed. i keep my ODB2 reader in my glove box just to clear it...but its getting old.

I didnt get 1 CEL for the 2k miles or so I put on the HFCs before my UpRev tune. I think, but am not sure, that the tuners do something to eliminate warning lights from the O2 sensors.